STUDY OF DISPERSION-STRENGTHENED ALLOYS PRODUCED BY SLIS TECHNIQUES.
Abstract
Alloys of nickel with Mg, U, Y, La, Gd, and Er were prepared by splatcooling and the growth rates of the precipitates were determined at various temperatures. In all cases the growth appears to be determined by a diffusion-controlled process. A qualitative correlation of decreasing growth rate with increasing melting point of the intermetallic compound was obtained for the Mg, U, and Y alloys, but this interpretation is not clear cut. The maximum solid solubilities of La, Gd, and Er in Ni are less than 150 ppm, but exact values could not be obtained. The compounds formed by La and Er have outstanding particle size stability at temperatures up to 1150C. This behavior must be at least partly attributable to the low solid solubility. The stability of the nickel-rare earth compounds is comparable to that of A12O3 in nickel. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 1966
- Accession Number
- AD0634384
Entities
People
- A. R. Kaufmann
- R. B. Russell
- W. C. Muller